Silicone monomer synthesis device with built-in separation assembly

Abstract

A silicone monomer synthesis device with a built-in separation assembly is disclosed, and includes a device main body, a separation assembly, a return assembly, and a gas outlet pipe. The device main body is internally provided with the separation assembly, particles separated by the separation assembly can return to a reaction zone main cylinder through the return assembly, and a purified gas is discharged from a reactor cylinder through the gas outlet pipe.

What is claimed is: 
     
         1 . A silicone monomer synthesis device with a built-in separation assembly, comprising:
 a device main body comprising a heat exchange assembly, a cylindrical reaction zone main cylinder, an inverted conical cylinder, and a gas inlet distributor, wherein the cylindrical reaction zone main cylinder, the inverted conical cylinder and the gas inlet distributor are sequentially connected to one another from top to bottom; the heat exchange assembly is installed inside the cylindrical reaction zone main cylinder, and a gas-solid two-phase flow composed of silicon particles and gas substances in the cylindrical reaction zone main cylinder exchanges heat with the heat exchange assembly;   a separation assembly comprising a riser, a closed head, and an elbow pipe, wherein the closed head is arranged at a top of the cylindrical reaction zone main cylinder, an inlet communicating with the riser is provided on the closed head, the elbow pipe is connected to an outlet of the riser, and the elbow pipe is arranged in a tangential direction of the riser;   a return assembly arranged between a circumferential wall located at a bottom of the closed head in the cylindrical reaction zone main cylinder and an inner wall of the cylindrical reaction zone main cylinder, wherein a return pipe of the return assembly communicates with a middle lower part of the cylindrical reaction zone main cylinder; and   a gas outlet pipe arranged at the top of the cylindrical reaction zone main cylinder and located at a middle upper part of the separation assembly, wherein an outlet of the elbow pipe communicates with the gas outlet pipe, and an annular gap is reserved between the riser and an inner wall of the gas outlet pipe.   
     
     
         2 . The silicone monomer synthesis device with a built-in separation assembly according to  claim 1 , wherein the gas inlet distributor is a flat distributor or a conical distributor. 
     
     
         3 . The silicone monomer synthesis device with a built-in separation assembly according to  claim 1 , wherein a heat exchange tube of the heat exchange assembly is in the form of a finger tube or a U-shaped tube. 
     
     
         4 . The silicone monomer synthesis device with a built-in separation assembly according to  claim 1 , wherein a center of the riser coincides with that of the cylindrical reaction zone main cylinder, a diameter of the riser is ⅕-⅛ times a diameter of the cylindrical reaction zone main cylinder, and a height of the riser is 1-3 times the diameter thereof. 
     
     
         5 . The silicone monomer synthesis device with a built-in separation assembly according to  claim 1 , wherein a cross section of the closed head is in a shape of a right frustum of cone, and a deviation distance between a center of the cone of the closed head and a center of the riser is 0.3-0.45 times the diameter of the cylindrical reaction zone main cylinder; and the return pipe of the return assembly is a cylindrical pipeline. 
     
     
         6 . The silicone monomer synthesis device with a built-in separation assembly according to  claim 1 , wherein a cross section of the closed head is in a shape of an inverted frustum of cone, and a center of the cone of the closed head coincides with a center of the riser; and the return assembly is an annular space between the cylindrical reaction zone main cylinder and an inner cylinder located at the bottom of the closed head. 
     
     
         7 . The silicone monomer synthesis device with a built-in separation assembly according to  claim 1 , wherein a diameter of the gas outlet pipe is 1.8-2.4 times a diameter of the riser. 
     
     
         8 . The silicone monomer synthesis device with a built-in separation assembly according to  claim 1 , wherein an outer wall surface of the elbow pipe is tangent to the riser, an upper wall surface of the elbow pipe is aligned with a top end of the riser, a number of the elbow pipe is three to six, and each elbow pipe is symmetrically distributed with respect to a central axis of the riser. 
     
     
         9 . The silicone monomer synthesis device with a built-in separation assembly according to  claim 1 , wherein a central axis of the elbow pipe is a curve of second order, and is horizontally arranged; and a cross section of the elbow pipe is in a rectangular, circular, or elliptic shape.